:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ink:#253b34;--muted:#677a70;--green:#246d56;--green-dark:#184e3c;--paper:#f6f8f4;--line:#dce5dd;--soft:#edf3ed;--error:#923d32}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.65}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;transition:background .15s,color .15s,border-color .15s}button:disabled{opacity:.42;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline-offset:3px;outline:3px solid #92bc9b}input,textarea,select{width:100%;color:var(--ink);background:#fff;border:1px solid #ccd8ce;border-radius:8px;padding:11px 13px}textarea{resize:vertical}label{gap:7px;font-size:14px;font-weight:550;display:grid}input:disabled,textarea:disabled{background:#f1f4ef}h1,h2,h3,p{margin:0}h1{letter-spacing:-.7px;font-size:29px;font-weight:650;line-height:1.5}h2{font-size:21px;font-weight:620;line-height:1.55}h3{font-size:16px;font-weight:600}a{color:var(--green);text-underline-offset:4px}button{border:0}button.primary,button.secondary{white-space:nowrap;border-radius:8px;padding:10px 19px;font-weight:600}.primary{background:var(--green);color:#fff;box-shadow:0 2px 3px #143e2110}.primary:hover:not(:disabled){background:var(--green-dark)}button.secondary{color:var(--ink);border:1px solid var(--line);background:#fff}.secondary:hover:not(:disabled){background:var(--soft)}.text-button,.danger-text{color:var(--green);white-space:nowrap;background:0 0;padding:7px 8px;font-weight:550}.danger-text{color:var(--error)}.text-button:hover:not(:disabled),.danger-text:hover:not(:disabled){text-underline-offset:4px;text-decoration:underline}.wide{width:100%}.stack{gap:19px;display:grid}.actions{align-items:center;gap:12px;display:flex}.wrap{flex-wrap:wrap}.muted{color:var(--muted)}.small{font-size:13px}.eyebrow{color:var(--muted);letter-spacing:1px;margin-bottom:6px;font-size:12px}.quiet{color:#b2cbb8;font-size:12px}.brand{letter-spacing:.3px;align-items:center;gap:11px;font-size:18px;font-weight:650;display:flex}.brand-mark{background:var(--green);color:#fff;border-radius:11px;place-items:center;width:40px;height:40px;font-family:serif;font-size:24px;line-height:1;display:inline-grid}.badge{background:var(--soft);color:#52695a;white-space:nowrap;border-radius:6px;padding:4px 11px;font-size:12px;display:inline-block}.badge.success{color:#25633f;background:#e8f2e8}.notice{border:1px solid var(--line);border-radius:8px;margin:17px 0;padding:13px 16px;font-size:14px}.notice p+button{margin-top:10px}.error{color:var(--error)}.notice.error{background:#fff4f0;border-color:#efdbd2}.notice.success{color:#285f3f;background:#edf6ed;border-color:#d6e9d6}.loading-shell{min-height:100dvh;color:var(--muted);place-content:center;justify-items:center;gap:20px;display:grid}.login-shell{background:#fff;grid-template-columns:minmax(350px,1fr) minmax(420px,1fr);min-height:100dvh;display:grid}.login-story{color:#edf5e9;background:#244c3d;flex-direction:column;justify-content:space-between;min-height:680px;padding:50px 12%;display:flex}.login-story .brand-mark{color:#244c3d;background:#c6dbad}.login-story h2{letter-spacing:1px;margin:15px 0 26px;font-size:clamp(28px,3vw,45px);font-weight:500;line-height:1.6}.login-story .eyebrow{color:#b6d0ac}.login-story>div>p:last-child{color:#c6d8c6;line-height:2.1}.login-card{place-self:center;width:min(420px,100%);padding:40px 24px}.login-card h1{margin-bottom:10px;font-size:30px}.login-card>.muted{margin-bottom:32px}.login-card>.small{margin-top:26px;line-height:1.9}.login-card .primary{margin-top:7px}.app-header{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;height:80px;padding:0 40px;display:flex}.header-caption{letter-spacing:0;color:var(--muted);border-left:1px solid var(--line);margin-left:6px;padding-left:15px;font-size:12px;font-weight:400}.workspace-layout{grid-template-columns:232px minmax(0,1fr);max-width:1540px;min-height:calc(100dvh - 80px);margin:0 auto;display:grid}.sidebar{border-right:1px solid var(--line);flex-direction:column;padding:35px 25px;display:flex}.student-picker{color:var(--muted);gap:10px;margin-bottom:34px;font-size:12px}.student-picker select{color:var(--ink);padding:12px;font-size:16px;font-weight:600}.sidebar nav{gap:8px;display:grid}.nav-item{text-align:left;color:var(--muted);background:0 0;border-radius:8px;align-items:center;gap:13px;padding:12px 16px;font-weight:550;display:flex}.nav-item span{font-size:20px;line-height:1}.nav-item.active{color:#2b6448;background:#e4eee2}.nav-item:hover:not(:disabled){background:var(--soft)}.sidebar-note{color:#7c8d7e;margin-top:auto;padding-top:60px;line-height:1.9}.main-content{width:100%;max-width:1130px;margin:0 auto;padding:38px 48px 70px}.page-heading{justify-content:space-between;align-items:center;gap:15px;margin-bottom:27px;display:flex}.page-heading .eyebrow{letter-spacing:.4px}.card{border:1px solid var(--line);background:#fff;border-radius:13px;padding:26px 30px;box-shadow:0 4px 12px #29472c03}.section-heading{justify-content:space-between;align-items:center;gap:15px;margin-bottom:11px;display:flex}.section-heading h2{font-size:20px}.plan-card>.muted{margin-bottom:20px}.empty-plan{text-align:center;color:var(--muted);padding:39px 20px}.empty-plan h3{color:#4a6052;margin:12px 0 7px}.empty-plan p{font-size:13px}.empty-mark{background:var(--soft);color:#97ad93;border-radius:10px;place-items:center;width:48px;height:52px;font-size:26px;display:inline-grid}.task-list{margin:5px 0;padding:0;list-style:none}.task-row{border-bottom:1px solid #e8ede7;align-items:flex-start;gap:17px;padding:22px 0;display:flex}.task-row:last-child{border-bottom:0}.task-number{font-variant-numeric:tabular-nums;color:#80927f;min-width:22px;padding-top:6px;font-size:13px}.task-content{flex:1;min-width:0}.task-meta{align-items:center;gap:11px;margin-bottom:5px;display:flex}.subject{color:#40614a;background:#eef4eb;border-radius:4px;padding:2px 8px;font-size:12px;font-weight:600}.task-status{color:var(--muted);font-size:11px}.task-title{white-space:pre-wrap;overflow-wrap:anywhere;font-size:16px;line-height:1.75}.task-actions{align-items:center;gap:2px;padding-top:10px;display:flex}.icon-button{color:#64816d;background:0 0;border-radius:5px;min-width:29px;height:32px;padding:3px 6px;font-size:18px;line-height:1}.icon-button:hover:not(:disabled){background:var(--soft)}.drag-handle{cursor:grab;font-size:24px}.drag-handle:active{cursor:grabbing}.frozen .subject{color:#6f7e70;background:#f1f1ed}.frozen .task-number{color:#a8b0a5}.task-form{background:#f5f8f2;border-radius:8px;flex:1;min-width:0;margin:10px 0;padding:17px}.task-fields{grid-template-columns:120px minmax(0,1fr);gap:15px;display:grid}.task-form .actions{margin-top:16px}.task-form .error{margin-top:8px;font-size:13px}.plan-toolbar{border-top:1px solid var(--line);margin-top:10px;padding-top:22px}.toolbar-spacer{flex:1}.import-panel{background:#f5f8f2;border-radius:9px;margin:24px 0;padding:22px}.import-panel .small{margin:10px 0 17px}.import-panel .actions{margin-top:17px}.import-panel a{font-size:12px}.code-input{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px;line-height:1.6}.sync-card{margin-top:23px}.sync-card h2{font-size:17px}.sync-grid{grid-template-columns:1fr 1fr 1.5fr;gap:20px;margin:0;padding:15px 0 20px;display:grid}.sync-grid>div+div{border-left:1px solid var(--line);padding-left:28px}.sync-grid dt{color:var(--muted);margin-bottom:7px;font-size:12px}.sync-grid dd{font-variant-numeric:tabular-nums;margin:0;font-size:23px;font-weight:550;line-height:1.6}.sync-grid .time-value{padding-top:6px;font-size:16px}.sync-card>p{border-top:1px solid #e8ede7;padding-top:15px}.page-footnote{color:#7b8b7c;margin:18px 3px;font-size:12px}.loading-card{text-align:center;color:var(--muted);padding:70px 24px}.device-card>h2{margin:3px 0 7px}.binding-form{max-width:430px;margin:25px 0}.binding-form .primary{justify-self:start}.bound-device{align-items:center;gap:20px;padding:27px 0;display:flex}.bound-device>button{margin-left:auto}.bound-device h3{margin:7px 0 1px;font-size:19px}.device-symbol{color:#6b8c70;font-size:70px;line-height:1}.soft-note{color:#5a715c;background:#f2f6ee;border-radius:9px;margin-top:20px;padding:18px 22px;font-size:13px}.soft-note p{margin-top:7px}.visually-hidden{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (min-width:1500px){.main-content{padding-top:48px}.page-heading{margin-bottom:34px}.task-row{padding:25px 0}}@media (max-width:1050px){.main-content{padding:30px 26px 55px}.workspace-layout{grid-template-columns:200px minmax(0,1fr)}.sidebar{padding:30px 18px}.card{padding:23px}.task-row{flex-wrap:wrap;gap:12px}.task-actions{margin-left:34px;padding:0}.task-content,.task-form{flex-basis:calc(100% - 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